摘要
了解和把握汶川大地震中的桥梁震害情况,是进一步开展桥梁工程抗震研究的前提。基于现场考察,对震后重灾区有代表性的桥梁震害情况进行简要介绍,对震害类型及原因进行初步分析和评估,对震害特点进行归纳。通过考察与评估,认为重灾区的绝大部分桥梁受到程度不一的震害,但大部分桥梁受损较轻,无需加固或简单加固就可供临时通行,少量桥梁受损严重,极少数桥梁发生整体倒塌。另外,桥梁震害程度受山区地质灾害的影响显著。在此基础上,对今后的桥梁抗震设计及技术研究提出有针对性的建议。
The good understanding and knowledge of the seismic damages to bridges in the Wenchuan Earthquake are the prerequisite for further research of seismic resistance of bridges. Based on the inspection in the field, the damages to the typical bridges in the severely afflicted areas in the Earthquake are briefly introduced, the types and causes of the damages are preliminarily analyzed and evaluated and the features of the damages are summarized. Through the inspection and evaluation, it is concluded that most of the bridges in the severely afflicted areas have suffered seismic damages in different degrees. However, a large number of the bridges are slightly damaged and can provide temporary passage without or just with the need of simple strengthening, a few bridges are severely damaged and few completely collapse. In addition, the influences of the geological disaster in mountainous areas on the degrees of the damages to bridges are significant. In such case, the corresponding purposeful suggestions are given for future research and design of the seismic resistance of the bridges.
出处
《桥梁建设》
EI
CSCD
北大核心
2009年第5期68-73,共6页
Bridge Construction
关键词
桥梁
震害
考察
评估
bridge
seismic damage
inspection
evaluation
